HTS code 7115.90.05 covers "Other articles of precious metal or of metal clad with precious metal › Other › Articles of precious metal, in rectangular or near rectangular shapes, containing 99.5 percent or more by weight of a precious metal and not otherwise marked or decorated than with weight, purity, or other identifying information" under the US Harmonized Tariff Schedule. This is the official duty rate charged by US Customs when this product is imported into the United States, sourced directly from the U.S. International Trade Commission and refreshed daily.